diff --git a/nix/packages.nix b/nix/packages.nix
index 1406abb..6334bb5 100644
--- a/nix/packages.nix
+++ b/nix/packages.nix
@@ -24,8 +24,8 @@
           filter {
             root = ../.;
             exclude = [
-              "nix"
-              "docs"
+              "nix/"
+              "docs/"
               "README.md"
               "default.nix"
               "shell.nix"